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Our heritage

A Name Synonymous with Quality, Service and Innovation. Plasmor supply a comprehensive range of over 300 concrete products for House Building, Commercial and Industrial construction in both the public and private sectors throughout the UK.

Get to know Plasmor

Our company

Plasmor Limited is a privately owned concrete block and concrete block paving manufacturer supplying a comprehensive range of over 300 concrete products to the building industry throughout the UK.


Established in 1959, the Plasmor Group of companies has grown to be one of Britain’s largest independent concrete products manufacturers.

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The history of Plasmor

Our History

Plasmor was incorporated in 1959 on the site of an old lime-burning quarry at Womersley Road, Knottingley in Yorkshire. Antony and Pat Slater were founders and registered the business as PLASMOR Limited.

Over the past 65 years, the business has grown and expanded into multiple different block plants, screening plants & expanded it's fleet to help keep up with demand.

The timeline attached expands on some of the key dates that helped shape the business in to what it is today. 


We are committed


Economical, reliable, consistent and efficient methods of block construction can deliver cost effective structures, optimise sustainable performance and improve energy efficiency. Plasmor remain in the forefront of innovative sustainable construction materials with aggregate blocks at the leading edge of sustainable long-lasting construction.

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Transparent policies

Policies & certificates

At Plasmor we constantly seek opportunities to minimise risk and create value by continuously improving the sustainability performance of all our operations and business activities.

Plasmor Property Ltd

The Plasmor Group of Companies own a significant estate of land and properties including 5 manufacturing and distribution sites and 3 quarry sites. It also manages 2 leased sites connected to the Group's rail distribution business.


Plasmor (Property) Ltd also invests in a discreet portfolio of properties which it operates as a holiday let business in the Lake District and North Yorkshire.

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Our locations

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